Most acquisitions that disappoint were not undone by what due diligence missed. They were undone by questions nobody asked before the process began.
Acquisitions rarely fail because of a surprise hidden in the data room. Due diligence today is thorough: financial, legal, tax, commercial and technical reviews leave few stones unturned. Yet a significant share of acquisitions still fail to deliver the value expected when they were approved.
The reason is usually upstream. The most consequential decisions in an acquisition are made before the process starts — in how the strategic rationale is framed, how the target is chosen and what the acquirer believes it will be able to do after closing. Seven questions, asked honestly at that stage, prevent many of the mistakes that due diligence cannot.
1. Why this acquisition, and why now?
A clear strategic rationale is the foundation of everything that follows. Is the acquisition about entering a market, acquiring a capability, gaining scale, securing supply or eliminating a competitor? Each rationale implies a different valuation logic and a different integration plan.
Equally important is the question of timing. Is the acquisition driven by strategy, or by an opportunity that happened to arrive — a banker’s approach, a competitor’s bid, a seller in a hurry? Opportunistic deals are not necessarily bad, but they deserve particular scrutiny.
2. What is the alternative?
Every acquisition should be compared with the alternatives: building the capability internally, forming a partnership, acquiring a different target or doing nothing. An acquisition that is attractive in isolation may look much less compelling when compared honestly with the cost and risk of building the same position organically.
3. Where exactly will the value come from?
Synergies are the most frequently overstated element of any deal. Revenue synergies in particular tend to be optimistic, slow to materialise and difficult to measure. Cost synergies are more reliable but often underestimate one-off costs and the disruption involved.
Before agreeing a price, the acquirer should be able to say, line by line, where the value will come from, who will be responsible for delivering it and when. If the deal only works with full revenue synergies, it is probably too expensive.
4. Can we actually integrate this business?
Integration capacity is finite. A management team already running a demanding transformation, or integrating a previous acquisition, may not have the bandwidth to absorb another one. Cultural differences — between a founder-led target and a corporate acquirer, or across countries — can be more decisive than any operational issue.
The question is not only whether integration is possible, but who will lead it, with what resources and with what authority.
5. Who are the people who matter, and will they stay?
In many acquisitions, particularly of smaller and founder-led companies, value resides in a limited number of people: the founder, key salespeople, technical leaders or relationship holders. Identifying them early, understanding their motivations and designing retention arrangements before closing is essential.
Acquirers frequently discover too late that the person who made the business successful has no intention of working within a larger organisation.
6. What are we assuming that might not be true?
Every investment case rests on assumptions: market growth, client retention, pricing power, regulatory stability, the continuation of key contracts. The most useful exercise before committing is to list these assumptions explicitly and ask which of them, if wrong, would destroy the case.
This is where an independent perspective is most valuable. Teams that have worked for months on a deal naturally become attached to it. Someone outside the process, with no stake in its completion, can test assumptions without the pressure to close.
7. At what point would we walk away?
Finally, the acquirer should define, before negotiations begin, the conditions under which it would not proceed: a maximum price, unacceptable findings, a deterioration in the target’s performance, the loss of key people or terms that undermine the rationale.
Without a predefined walk-away point, the momentum of the process — time invested, internal commitment, communication to boards and investors — pushes towards closing at almost any cost. Some of the best acquisitions are the ones that were not made.
Strategy before process
Due diligence verifies what the seller presents. It does not decide whether the acquisition makes sense. That judgement belongs to the acquirer’s leadership and board, and it is best exercised before advisers, timetables and momentum take over.
Acquirers who ask these seven questions honestly, and early, do not eliminate risk. They do ensure that the risks they take are deliberate, understood and worth taking.